/Engine/Plugins/Runtime/Metasound/Source/MetasoundGraphCore/Public/MetasoundDataFactory.h
Specialization for single arg. This terminates the variadic parameter unpacking by excluding the recursive declaration of TDataTypeVariantConstructorTraits<>
template<typename [DataType](API\Plugins\OptimusCore\DataType), typename ArgType> struct TDataTypeVariantConstructorTraits< DataType, ArgType >